Staufenia sinon (Bayle 1878)
A photo of the inner whorls of a medial slice with background light. The protoconch can be discerned at the very center. From the Aalenian at the Wutach Valley, Germany.
By Ludwigia
A photo of the inner whorls of a medial slice with background light. The protoconch can be discerned at the very center. From the Aalenian at the Wutach Valley, Germany.
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